9f1f1726d0
After forking from Ryu, the namespace needs to change from 'ryu' to 'os_ken' so that it won't collide with the namespace of the old library. Change-Id: I807a8785e525cc02825d15a1a01eec3d5d20cce4
124 lines
3.7 KiB
Python
124 lines
3.7 KiB
Python
# Copyright (C) 2015 Nippon Telegraph and Telephone Corporation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import re
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def generate(modname):
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import sys
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import functools
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mod = sys.modules[modname]
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def add_attr(k, v):
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setattr(mod, k, v)
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add_attr('ofp_msg_type_to_str',
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functools.partial(_msg_type_to_str, mod))
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add_attr('ofp_error_type_to_str',
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functools.partial(_error_type_to_str, mod))
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add_attr('ofp_error_code_to_str',
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functools.partial(_error_code_to_str, mod))
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add_attr('ofp_error_to_jsondict',
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functools.partial(_error_to_jsondict, mod))
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def _get_value_name(mod, value, pattern):
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for k, v in mod.__dict__.items():
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if k.startswith(pattern):
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if v == value:
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return k
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return 'Unknown'
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def _msg_type_to_str(mod, type_):
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"""
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This method is registered as ofp_msg_type_to_str(type_) method
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into os_ken.ofproto.ofproto_v1_* modules.
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And this method returns the message type as a string value for given
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'type' defined in ofp_type enum.
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Example::
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>>> ofproto.ofp_msg_type_to_str(14)
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'OFPT_FLOW_MOD(14)'
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"""
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return '%s(%d)' % (_get_value_name(mod, type_, 'OFPT_'), type_)
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def _error_type_to_str(mod, type_):
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"""
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This method is registered as ofp_error_type_to_str(type_) method
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into os_ken.ofproto.ofproto_v1_* modules.
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And this method returns the error type as a string value for given
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'type' defined in ofp_error_msg structure.
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Example::
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>>> ofproto.ofp_error_type_to_str(4)
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'OFPET_BAD_MATCH(4)'
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"""
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return '%s(%d)' % (_get_value_name(mod, type_, 'OFPET_'), type_)
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def _get_error_names(mod, type_, code):
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t_name = _get_value_name(mod, type_, 'OFPET_')
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if t_name == 'Unknown':
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return 'Unknown', 'Unknown'
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# Construct error code name pattern
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# e.g.) "OFPET_BAD_MATCH" -> "OFPBMC_"
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if t_name == 'OFPET_FLOW_MONITOR_FAILED':
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c_name_p = 'OFPMOFC_'
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else:
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c_name_p = 'OFP'
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for m in re.findall("_(.)", t_name):
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c_name_p += m.upper()
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c_name_p += 'C_'
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c_name = _get_value_name(mod, code, c_name_p)
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return t_name, c_name
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def _error_code_to_str(mod, type_, code):
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"""
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This method is registered as ofp_error_code_to_str(type_, code) method
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into os_ken.ofproto.ofproto_v1_* modules.
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And this method returns the error code as a string value for given
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'type' and 'code' defined in ofp_error_msg structure.
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Example::
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>>> ofproto.ofp_error_code_to_str(4, 9)
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'OFPBMC_BAD_PREREQ(9)'
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"""
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(_, c_name) = _get_error_names(mod, type_, code)
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return '%s(%d)' % (c_name, code)
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def _error_to_jsondict(mod, type_, code):
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"""
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This method is registered as ofp_error_to_jsondict(type_, code) method
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into os_ken.ofproto.ofproto_v1_* modules.
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And this method returns ofp_error_msg as a json format for given
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'type' and 'code' defined in ofp_error_msg structure.
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Example::
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>>> ofproto.ofp_error_to_jsondict(4, 9)
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{'code': 'OFPBMC_BAD_PREREQ(9)', 'type': 'OFPET_BAD_MATCH(4)'}
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"""
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(t_name, c_name) = _get_error_names(mod, type_, code)
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return {'type': '%s(%d)' % (t_name, type_),
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'code': '%s(%d)' % (c_name, code)}
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